粘钢加固钢筋混凝土梁的抗弯特性分析  

Flexural behavior analysis of reinforced concrete beams strengthened with bonded steel

作　　者：王浩程 刘金龙[1] WANG Hao-cheng;LIU Jin-long(School of Urban Construction&Transportation,Hefei University,Hefei 230601,China)

机构地区：[1]合肥学院城市建设与交通学院,安徽合肥230601

出　　处：《河南城建学院学报》2023年第1期42-49,共8页Journal of Henan University of Urban Construction

基　　金：安徽省重点研究与开发计划项目(202004a05020012、202004h07020002)。

摘　　要：基于ABAQUS有限元软件对粘钢加固钢筋混凝土梁的抗弯性能进行非线性分析。通过两种抗弯强度的钢板加固RC梁抗弯试验得出钢板材质对加固性能有显著影响。分析了钢板厚度、纵向受拉钢筋配筋率、混凝土强度等级及是否二次受力对RC梁加固效果的影响,结果表明:钢板厚度、纵向受拉钢筋配筋率均对加固梁的抗弯性能有较大影响;二次受力会使加固梁的承载力降低;混凝土强度等级对RC梁抗弯性能的影响相对较小。Based on ABAQUS finite element software,the nonlinear analysis of the flexural behavior of reinforced concrete beams reinforced by cemented steel is carried out.Two kinds of steel plates with flexural strength are used to strengthen RC beams.The effects of steel plate thickness,longitudinal tensile reinforcement ratio,concrete strength grade and whether or not the RC beam is stressed twice are analyzed.The results show that the steel plate thickness and longitudinal tensile reinforcement ratio have great influence on the flexural performance of the reinforced beam,and the bearing capacity of the reinforced beam is reduced by the secondary stress.The effect of concrete strength grade on flexural performance of RC beams is relatively small.

关 键 词：钢板加固 钢筋混凝土梁 受弯性能 有限元分析 

分 类 号：TU528[建筑科学—建筑技术科学]